The center drill

Short Description:

The material of the center drill can be divided into high-speed steel, cemented carbide, ceramics and polycrystalline diamond. Among them, high-speed steel is a commonly used material with high cost performance; cemented carbide has good wear resistance and hardness, and is suitable for processing materials with relatively high hardness; ceramic center drill has good high temperature resistance and wear resistance, but processing The efficiency is low; the polycrystalline diamond center drill has ultra-high hardness and wear resistance, and is suitable for processing high-hardness materials. When selecting the center drilling material, it should be selected according to the hardness of the workpiece material and processing conditions. Generally speaking, for harder metal materials, you can choose harder materials, such as cemented carbide, polycrystalline diamond, etc.; for softer materials, you can choose high-speed steel or ceramics. In addition, it is also necessary to pay attention to factors such as the size and surface quality of the center drill to ensure the processing effect and processing accuracy. When using a center drill, attention should be paid to processing lubrication and cooling conditions to avoid tool wear and reduced surface quality due to excessive processing. At the same time, we must also pay attention to the safety during processing to avoid workpiece instability or processing accidents caused by low processing accuracy.

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Basic Details

The service life of the center drill depends on many factors, such as the type of material, cutting conditions, processing methods, etc. Under normal circumstances, the service life of the center drill is between several hours and dozens of hours, and it needs to be replaced in time to ensure the processing quality and efficiency. For more specific information, it is recommended to consult a professional manufacturer or processing technician.

The center drill is used as follows:

1. When installing the center drill, choose the center drill that matches the workpiece.

2. Make sure that the cutting edge of the center drill is clear and sharp, and there is no wear or impact marks between the shaft and the cutting edge.

3. Insert the shank of the center drill into the drill clamp and clamp it.

4. Mark the location of the hole to be drilled on the workpiece surface and mark the center point with a lead hydroxide horizontal line.

5. Start the drill press at low speed while gently placing the center drill on the center point.

6. When the center drill starts drilling, it should be kept vertical and not operated obliquely, so as to avoid the deviation of the drilling position.

7. After the center drill has drilled to the desired depth, stop the drill press, remove the center drill, and wipe it clean with a cleaning cloth.

8. Finally, further process the drilled holes with additional drill bits as required. Pay attention to safety when using the center drill to avoid injuries caused by fingers being caught during drilling or the workpiece falling off the drilling machine during drilling.

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